MVA Year 9 Science Reactivity Series of Metals Quiz

What is the reactivity series of metals?

• Arrangement of metals in the order of their color

• Arrangement of metals in the order of their reactivity

• Arrangement of metals in the order of their weight

• Arrangement of metals in the order of their melting point

Arrange the following metals in order of their reactivity: zinc, copper, iron, magnesium, and lead.

• Copper, lead, zinc, iron, magnesium

• Iron, copper, lead, zinc, magnesium

• Zinc, copper, lead, iron, magnesium

• Magnesium, zinc, iron, lead, copper

Which metal is more reactive: potassium or sodium?

• Iron

• Copper

• Sodium

• Potassium

Explain the reactivity series of metals and its significance in displacement reactions.

• The reactivity series of metals has no significance in displacement reactions

• The reactivity series of metals helps to predict the outcome of displacement reactions by showing the relative reactivity of different metals.

• The reactivity series of metals is a list of metals in alphabetical order

• The reactivity series of metals is used to determine the color of the metal

Why is potassium more reactive than sodium?

• Potassium has fewer valence electrons.

• Potassium has more valence electrons.

• Potassium is less reactive than sodium.

• Potassium has a lower atomic number.

What is a displacement reaction?

• A displacement reaction is when two elements combine to form a compound

• A displacement reaction is when a less reactive element displaces a more reactive element from its compound

• A displacement reaction is when a more reactive element displaces a less reactive element from its compound.

• A displacement reaction is when an element remains in the same compound without any change

In a displacement reaction, will zinc displace copper from copper sulfate solution?

• No

• Yes

• Maybe

• Only in certain conditions

Write the balanced chemical equation for the displacement reaction between iron and copper sulfate solution.

• Fe + CuSO₄ -> FeSO₄ + Cu

• Fe + CuSO₄ -> Fe₂(SO₄)₃ + Cu

• Fe + CuSO₄ -> Fe₂(SO₄)₃ + Cu₂

• Fe + CuSO₄ -> Fe₂(SO₄)₂ + Cu

Explain the role of displacement reactions in the extraction of metals from their ores.

• Displacement reactions are not used in the extraction of metals from their ores

• Displacement reactions are only used in the extraction of non-metals from their ores

• Displacement reactions are used to extract gases from their ores

• Displacement reactions are used to extract metals from their ores.

What happens when magnesium is added to a solution of copper sulfate?

• The solution turns green

• The solution becomes more acidic

• The blue color of the copper sulfate solution fades as magnesium displaces copper from the solution, forming magnesium sulfate and copper metal.

• The solution becomes more basic